body of literature that comprises those works, excluding the New Testament, written by Christians before the 8th century ad. Patristic literature is generally identified today with the entire Christian literature of the early Christian centuries, irrespective of its orthodoxy or the reverse. Taken literally, however, patristic literature should denote the literature emanating from the Fathers of the Christian Church, the Fathers being those respected bishops and other teachers of exemplary life who witnessed to and expounded the orthodox faith in the early centuries. This would be in line with the ancient practice of designating as “the Fathers” prominent church teachers of past generations who had taken part in ecumenical councils or whose writings were appealed to as authoritative. Almost everywhere, however, this restrictive definition has been abandoned. There are several reasons why a more elastic usage is to be welcomed. One is that some of the most exciting Christian authors,...